Update debugPanel plugin to new `me.input` API.
Update debugPanel plugin to new `me.input` API.

TukekeSoft/melonJS,MarkoIvanetic/melonJS,rlugojr/melonJS,srbala/melonJS,melonjs/melonJS,melonjs/melonJS,rlugojr/melonJS,MarkoIvanetic/melonJS,gopalindians/melonJS,Smoss/Enoru-eco,srbala/melonJS,gopalindians/melonJS,TukekeSoft/melonJS,srbala/melonJS,rlugojr/melonJS,gopalindians/melonJS,Smoss/Enoru-eco,TukekeSoft/melonJS